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參數(shù)資料
| 型號(hào)： | ISL12057IBZ |
| 廠商： | Intersil |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC/CALENDAR I2C 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 980 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年 |
| 時(shí)間格式： | HH:MM:SS（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 電壓 - 電源，電池： | 1.4 V ~ 1.8 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
7
FN6755.1
March 3, 2011
General Description
The ISL12057 device is a low-power, real-time clock with
clock/calendar, power-fail indicator, and alarm function.
The oscillator uses an external, low-cost 32.768kHz crystal
with 6pF load capacitance. The real-time clock tracks time
with separate registers for hours, minutes, and seconds. The
device has calendar registers for date, month, year, and day
of the week. The calendar is accurate through 2099, with
automatic leap year correction.
The ISL12057 has two flexible alarms, and each can be set to
any clock/calendar value for a match; for example, every
minute, every Tuesday, or at 5:23 a.m. on the first day of every
month. The alarm status is available by checking the Status
Register, or the device can be configured to provide a hardware
interrupt via the IRQ1/FOUT or IRQ2 pin. There is a repeat
mode for the alarm, which allows a periodic interrupt every
second or every minute.
Pin Description
X1, X2
The X1 and X2 pins are the input and output, respectively, of
an inverting amplifier. An external 32.768kHz quartz crystal
with 6pF load capacitance is used with the ISL12057 to
supply a timebase for the real-time clock. See Figure 6.
The device can also be driven directly from a 32.768kHz
square wave source with peak-to-peak voltage from 0V to
VDD at X1 pin with X2 pin floating.
Typical Performance Curves Temperature is +25°C unless otherwise specified
FIGURE 2. IDD1 vs VDD
FIGURE 3. IDD1 vs TEMPERATURE
FIGURE 4. IDD vs VDD vs FOUT
FIGURE 5. FOUT VS VDD WITH A TYPICAL 32.768kHZ CRYSTAL
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1.41.9
2.42.9
3.4
VDD (V)
I DD
1(
A
)
0.2
0.4
0.6
0.8
1.0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
3.0
1.8
1.4
3.6
I DD1
(A)
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.41.9
2.42.9
3.4
I DD
(A)
8192Hz
1Hz
32768Hz
4096Hz
VDD (V)
32767.0
32767.2
32767.4
32767.6
32767.8
32768.0
32768.2
32768.4
32768.6
32768.8
32769.0
1.4
1.9
2.4
2.9
3.4
F
OU
T
(Hz)
VDD (V)
FIGURE 6. RECOMMENDED CRYSTAL CONNECTION
X1
X2
ISL12057
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL12057IBZ-T | 功能描述:實(shí)時(shí)時(shí)鐘 REAL TIME CLK W/ ALARM DS1337 COMP RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12057IRUZ-T | 功能描述:實(shí)時(shí)時(shí)鐘 REAL TIME CLK W/ ALARM DS1337 COMP RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12057IUZ | 功能描述:實(shí)時(shí)時(shí)鐘 REAL TIME CLK W/ ALARM DS1337 COMP RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12057IUZ-T | 功能描述:實(shí)時(shí)時(shí)鐘 REAL TIME CLK W/ ALARM DS1337 COMP RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12058 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Cost and Low Power I2C-Bus? Real Time Clock/Calendar |
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